Default: 100% (doubles your bet)
The Martingale Calculator is an online tool that helps gamblers plan a progressive betting strategy by showing the sequence of bets required to recover losses and secure a fixed profit.
Martingale is a progressive betting system where the player doubles the bet after each loss to recover all previous losses and make a profit equal to the original stake once a win occurs. It is popular in even-money bets like Red/Black in roulette.
After a loss, you double your next bet. When you eventually win, the payout covers all prior losses and delivers the base profit. This method requires a large bankroll and discipline to withstand losing streaks.
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